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Key Documents

8.14444

Sigma-Aldrich

1-Octadecanethiol

for synthesis

Synonym(s):

1-Octadecanethiol, n-Octadecyl mercaptan, Stearyl mercaptane

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About This Item

Linear Formula:
CH3-(CH2)16-CH2-SH
CAS Number:
Molecular Weight:
286.56
MDL number:
UNSPSC Code:
12352105
EC Index Number:
220-744-1
NACRES:
NA.22

vapor pressure

<0.5 hPa ( 20 °C)

Quality Level

Assay

≥98.0% (GC)

form

solid

autoignition temp.

>200 °C

potency

>5000 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rat)

bp

366 °C

mp

28-31 °C

transition temp

flash point 185 °C

density

0.847 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C18H38S/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3

InChI key

QJAOYSPHSNGHNC-UHFFFAOYSA-N

Application

  • Self-Assembled 1-Octadecanethiol Membrane on Pd/ZnO for a Selective Room Temperature Flexible Hydrogen Sensor: This study explores the use of 1-octadecanethiol in the development of a selective room temperature hydrogen sensor, demonstrating its potential in enhancing sensor performance (Pathak, Cho, 2021).
  • Property improvement of GaAs surface by 1-octadecanethiol passivation: The article investigates the impact of 1-Octadecanethiol passivation on GaAs surfaces, revealing improvements in surface properties and potential applications in semiconductor technologies (Zhou et al., 2019).
  • Sputtering synthesis and optical investigation of octadecanethiol-protected fluorescent Au nanoparticles: This research examines the optical properties of gold nanoparticles protected by 1-octadecanethiol, highlighting their potential in various optical and electronic applications (Ishida et al., 2015).
  • Kinetics of radical telomerization of acrylic acid in the presence of 1-octadecanethiol: The study focuses on the telomerization process of acrylic acid with 1-octadecanethiol, offering insights into the polymerization kinetics and applications in polymer science (Mezhuev et al., 2018).
  • Formation of a mixed monolayer on a gold surface using fluorobenzenethiol and alkanethiol: This article describes the formation of mixed monolayers using 1-octadecanethiol, which could be crucial for developing advanced molecular assemblies on gold surfaces (Ikematsu et al., 2019).

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Appearance of substance (visual): turbidity
Melting range (lower value): ≥ 28 °C
Melting range (upper value): ≤ 32 °C
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Pictograms

Exclamation markEnvironment

Signal Word

Warning

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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